New Jersey Senate

2021 Redistricting Update

Democrats currently control the New Jersey Senate 25-15. All districts are up for election in 2021. Elections in New Jersey will be held under the current district lines in 2021. The current LDI scores are for the 2017 cycle; updated scores for the 2021 cycle will be available soon.

2019 Election Update

While the full New Jersey Senate won’t be on the ballot again until 2021, there was a special election for Senate District 1 on Election Day 2019. Republicans flipped that formerly Democratic-held seat. Democrats now control the New Jersey State Senate 25-15.

2017 Election Update

After the 2013 election, Democrats controlled the New Jersey State Senate 24-16. In the 2017 election, Democrats flipped two seats and lost one seat to grow their majority to 25-15.

Democrats flipped SD 7 and SD 11. Democrats lost SD 2.

In 2019, Republican Dawn Marie Addiego changed her party affiliation to Democrat. Democrats now control the New Jersey State Senate 26-14.

Understanding the Map

EveryDistrict’s Legislative District Index (LDI) is the gold standard of state legislative competitiveness. Our LDI ranks state legislative districts on a scale from 100 to -100, using statewide elections data. Districts with a score of 100 would vote for statewide Democratic candidates by an average of 100 points (with the Democratic candidate receiving 100% of the vote); districts with a score of -100 would vote for statewide Republican candidates by an average of 100 points (with the Republican candidate receiving 100% of the vote). For a more realistic example, a district with a score of 10 would vote for statewide Democratic candidates by an average of 10 points (meaning we would expect the Democratic state legislative candidate to win with 55% of the vote compared to the Republican winning 45% of the vote).

After the 2018 election, EveryDistrict reviewed and enhanced our LDI system, improving the accuracy of the metric with new methodologies and the most recent electoral data.

For more information about EveryDistrict’s LDI, please click here.